shapefactoryimplementation.java

来自「著名的uncle Bob的Agile software development的」· Java 代码 · 共 14 行

public class ShapeFactoryImplementation implements ShapeFactory
{
  public Shape make(String shapeName) throws Exception
  {
    if (shapeName.equals("Circle"))
      return new Circle();
    else if (shapeName.equals("Square"))
      return new Square();
    else
      throw new Exception("ShapeFactory cannot create " + shapeName);
  }
}